Linux - srcds_linux check

#!/bin/sh
#Start srcds_linux if not running
#processus= `ps auxw | grep ./srcds_linux | grep -v grep | awk '{print $11}'`
if pidof -s srcds_linux > /dev/null; then
    echo 'Srcds is already running!'
else
    sh /home/user/srcds_startscript.sh
    echo 'Srcds started...'
fi